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Eclipse Rich Ajax Platform
Release 1.2
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org.eclipse.swt.widgets
Class TabFolder


java.lang.Object
  extended by

org.eclipse.swt.widgets.Widget
      extended by

org.eclipse.swt.widgets.Control
          extended by

org.eclipse.swt.widgets.Scrollable
              extended by

org.eclipse.swt.widgets.Composite
                  extended by
org.eclipse.swt.widgets.TabFolder
All Implemented Interfaces:
Adaptable
public class TabFolder
extends Composite

Instances of this class implement the notebook user interface metaphor. It allows the user to select a notebook page from set of pages.

The item children that may be added to instances of this class must be of type TabItem. Control children are created and then set into a tab item using TabItem#setControl.

Note that although this class is a subclass of Composite, it does not make sense to set a layout on it.

Styles:
TOP, BOTTOM
Events:
Selection

Note: Only one of the styles TOP and BOTTOM may be specified.

IMPORTANT: This class is not intended to be subclassed.

Since:
1.0

Constructor Summary
TabFolder ( Composite parent, int style)
          Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.
 
Method Summary
 void addSelectionListener ( SelectionListener listener)
          Adds the listener to the collection of listeners who will be notified when the receiver's selection changes, by sending it one of the messages defined in the SelectionListener interface.
  Point computeSize (int wHint, int hHint, boolean changed)
          Returns the preferred size of the receiver.
  Object getAdapter ( Class adapter)
          Implementation of the Adaptable interface.
  Rectangle getClientArea ()
          Returns a rectangle which describes the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings").
  TabItem getItem (int index)
          Returns the item at the given, zero-relative index in the receiver.
 int getItemCount ()
          Returns the number of items contained in the receiver.
  TabItem[] getItems ()
          Returns an array of TabItems which are the items in the receiver.
  TabItem[] getSelection ()
          Returns an array of TabItems that are currently selected in the receiver.
 int getSelectionIndex ()
          Returns the zero-relative index of the item which is currently selected in the receiver, or -1 if no item is selected.
 int indexOf ( TabItem item)
          Searches the receiver's list starting at the first item (index 0) until an item is found that is equal to the argument, and returns the index of that item.
 void layout ()
          If the receiver has a layout, asks the layout to lay out (that is, set the size and location of) the receiver's children.
 void removeSelectionListener ( SelectionListener listener)
          Removes the listener from the collection of listeners who will be notified when the receiver's selection changes.
 void setSelection (int index)
          Selects the item at the given zero-relative index in the receiver.
 void setSelection ( TabItem item)
          Sets the receiver's selection to the given item.
 void setSelection ( TabItem[] items)
          Sets the receiver's selection to be the given array of items.
 
Methods inherited from class org.eclipse.swt.widgets. Composite
changed, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, setBackgroundMode, setFocus, setLayout, setTabList
 
Methods inherited from class org.eclipse.swt.widgets. Scrollable
computeTrim
 
Methods inherited from class org.eclipse.swt.widgets. Control
addControlListener, addFocusListener, addKeyListener, addMouseListener, addTraverseListener, computeSize, forceFocus, getBackground, getBackgroundImage, getBorderWidth, getBounds, getCursor, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getParent, getShell, getSize, getToolTipText, getVisible, isEnabled, isFocusControl, isVisible, moveAbove, moveBelow, pack, pack, redraw, removeControlListener, removeFocusListener, removeKeyListener, removeMouseListener, removeTraverseListener, setBackground, setBackgroundImage, setBounds, setBounds, setCursor, setEnabled, setFont, setForeground, setLayoutData, setLocation, setLocation, setMenu, setRedraw, setSize, setSize, setToolTipText, setVisible, toControl, toControl, toDisplay, toDisplay
 
Methods inherited from class org.eclipse.swt.widgets. Widget
addDisposeListener, addListener, checkSubclass, checkWidget, dispose, getData, getData, getDisplay, getStyle, isDisposed, notifyListeners, removeDisposeListener, removeListener, setData, setData, toString
 
Methods inherited from class java.lang. Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

TabFolder

public TabFolder(
Composite parent,
                 int style)
Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.

The style value is either one of the style constants defined in class SWT which is applicable to instances of this class, or must be built by bitwise OR'ing together (that is, using the int "|" operator) two or more of those SWT style constants. The class description lists the style constants that are applicable to the class. Style bits are also inherited from superclasses.

Parameters:
parent - a composite control which will be the parent of the new instance (cannot be null)
style - the style of control to construct
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the parent is null
SWTException -
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
  • ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
See Also:
SWT, Widget.checkSubclass(), Widget.getStyle()
Method Detail

getAdapter

public 
Object getAdapter(
Class adapter)
Description copied from class: Widget
Implementation of the Adaptable interface.

IMPORTANT: This method is not part of the RWT public API. It is marked public only so that it can be shared within the packages provided by RWT. It should never be accessed from application code.

Specified by:
getAdapter in interface Adaptable
Overrides:
getAdapter in class Composite

getItems

public 
TabItem[] getItems()
Returns an array of TabItems which are the items in the receiver.

Note: This is not the actual structure used by the receiver to maintain its list of items, so modifying the array will not affect the receiver.

Returns:
the items in the receiver
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getItem

public 
TabItem getItem(int index)
Returns the item at the given, zero-relative index in the receiver. Throws an exception if the index is out of range.

Parameters:
index - the index of the item to return
Returns:
the item at the given index
Throws:
IllegalArgumentException -
  • ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getItemCount

public int getItemCount()
Returns the number of items contained in the receiver.

Returns:
the number of items
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

indexOf

public int indexOf(
TabItem item)
Searches the receiver's list starting at the first item (index 0) until an item is found that is equal to the argument, and returns the index of that item. If no item is found, returns -1.

Parameters:
item - the search item
Returns:
the index of the item
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the string is null
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getSelection

public 
TabItem[] getSelection()
Returns an array of TabItems that are currently selected in the receiver. An empty array indicates that no items are selected.

Note: This is not the actual structure used by the receiver to maintain its selection, so modifying the array will not affect the receiver.

Returns:
an array representing the selection
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

setSelection

public void setSelection(
TabItem item)
Sets the receiver's selection to the given item. The current selected is first cleared, then the new item is selected.

Parameters:
item - the item to select
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the item is null
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

setSelection

public void setSelection(
TabItem[] items)
Sets the receiver's selection to be the given array of items. The current selected is first cleared, then the new items are selected.

Parameters:
items - the array of items
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the items array is null
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

setSelection

public void setSelection(int index)
Selects the item at the given zero-relative index in the receiver. If the item at the index was already selected, it remains selected. The current selection is first cleared, then the new items are selected. Indices that are out of range are ignored.

Parameters:
index - the index of the item to select
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

getSelectionIndex

public int getSelectionIndex()
Returns the zero-relative index of the item which is currently selected in the receiver, or -1 if no item is selected.

Returns:
the index of the selected item
Throws:
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

layout

public void layout()
Description copied from class: Composite
If the receiver has a layout, asks the layout to lay out (that is, set the size and location of) the receiver's children. If the receiver does not have a layout, do nothing.

This is equivalent to calling layout(true).

Note: Layout is different from painting. If a child is moved or resized such that an area in the parent is exposed, then the parent will paint. If no child is affected, the parent will not paint.

Overrides:
layout in class Composite

getClientArea

public 
Rectangle getClientArea()
Description copied from class: Scrollable
Returns a rectangle which describes the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings").

Overrides:
getClientArea in class Scrollable
Returns:
the client area
See Also:
Scrollable.computeTrim(int, int, int, int)

computeSize

public 
Point computeSize(int wHint,
                         int hHint,
                         boolean changed)
Description copied from class: Control
Returns the preferred size of the receiver.

The preferred size of a control is the size that it would best be displayed at. The width hint and height hint arguments allow the caller to ask a control questions such as "Given a particular width, how high does the control need to be to show all of the contents?" To indicate that the caller does not wish to constrain a particular dimension, the constant SWT.DEFAULT is passed for the hint.

If the changed flag is true, it indicates that the receiver's contents have changed, therefore any caches that a layout manager containing the control may have been keeping need to be flushed. When the control is resized, the changed flag will be false, so layout manager caches can be retained.

Overrides:
computeSize in class Composite

addSelectionListener

public void addSelectionListener(
SelectionListener listener)
Adds the listener to the collection of listeners who will be notified when the receiver's selection changes, by sending it one of the messages defined in the SelectionListener interface.

When widgetSelected is called, the item field of the event object is valid. widgetDefaultSelected is not called.

Parameters:
listener - the listener which should be notified
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the listener is null
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
See Also:
SelectionListener, removeSelectionListener(org.eclipse.swt.events.SelectionListener), SelectionEvent

removeSelectionListener

public void removeSelectionListener(
SelectionListener listener)
Removes the listener from the collection of listeners who will be notified when the receiver's selection changes.

Parameters:
listener - the listener which should no longer be notified
Throws:
IllegalArgumentException -
  • ERROR_NULL_ARGUMENT - if the listener is null
SWTException -
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
See Also:
SelectionListener, addSelectionListener(org.eclipse.swt.events.SelectionListener)
Overview  Package    Class   Use  Tree  Deprecated  Index  Help 
Eclipse Rich Ajax Platform
Release 1.2
  PREV CLASS    NEXT CLASS FRAMES     NO FRAMES    
SUMMARY: NESTED | FIELD |  CONSTR |  METHOD DETAIL: FIELD |  CONSTR |  METHOD

Copyright (c) Innoopract Informationssysteme GmbH and others 2002, 2008. All rights reserved.

 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire